Doubtful according to GBIF classification (Possible variant of Gomphonema dichotomum var. sessile Brébisson ex Rabenhorst, 1864)
Gomphonema intricatum f. attenuata Manguin 1952
Homotypic synonym according to GBIF classification (Originally found in sources as doubtful taxon within Gomphonema vibrio var. intricatum (Kütz.) R.Ross)
Gomphonema intricatum var. dichotomum (Kütz.) Grunow